How many movies have Gabriele Palmieri and Gianni Ferrio collaborated on?

They have worked on 9 movies together! Their first movie together was Guardatele ma non toccatele (1959) while their highest rated movie together was Toto, Fabrizi and the Young People Today (1960). They have not worked together since Obiettivo ragazze (1963). They are most known for their comedy films together.